Check gas pressure. see chapter | Bosch Appliances 250 SXO LP

Troubleshooting

Display	Cause	Solution

E9	Temperature limiter opened circuit (overheat).	Check connections. *
	Trips at 220F (104C).	Check heat exchanger condition.*

EA	No ionization during safety time (safety time out).	Check gas pressure. (see chapter 2.9) *
	Note: appliance makes 3 ignition attempts	Check that gas is not diluted with air, as a
	before entering error mode “EA”.	result from recent gas pipeline rework.*.
		Check if vent terminal is blocked (especially
		when the appliance starts up for some sec-
		onds and then looses ionization signal).*
EC	The ionization signal momentarily disappeared	onds and then looses ionization signal).*
EC	The ionization signal momentarily disappeared	Check ionization electrode.*
	more then 5 times in less then 30 seconds. CO2	Check ionization electrode.*
	more then 5 times in less then 30 seconds. CO2	Check for a proper ground.*
	may be out of adjustment	Check for a proper ground.*
		Check CO2 levels.* (see chapter 9)
FA	Leakage error (gas valves do not close gas	Check gas valve and control unit.*
	circuit).

F7	Ionization error (flame sensing at stand-by).	Check control unit.*

E0	Internal software/hardware failure.	Check control unit.*

A7	Hot water temperature sensor/receiver defect	Check water temperature sensor/receiver and
	(from control unit).	connections.*
		Check incoming water temperature to heater, it
		must be above 32°F (0°C)

A9	Hot water temperature sensor/receiver mis-	Check that the water temperature sensor/receiver is
(flashing)	assembled (from control unit).	properly assembled on the horizontal of the hot
	Note: if display shows “A9” flashing, the	water pipe.*
	appliance can be operated normally, but	Check that the water temperature sensor/receiver is
	performance may be affected.	free from corrosion or moisture.*

C1	FAN rotation too low at start-up (from control	Check supply voltage.*
	unit).	Check fan and connections.*
		Check control unit.*
		Check if vent terminal is blocked.*

C6	FAN rotation too low at operation (from control	Check supply voltage.*
	unit).	Check fan and connections.*
		Check control unit.*

C7	No rotational speed sensor signal from FAN	Check fan and connections.*
		Check control unit.*

CA	Water flow signal over specified maximum value	Check water valve and flow sensor.*

E2	Inlet temperature sensor fault	Check water temperature sensor/receiver and
		connections.*
		Check incoming water temperature to heater, it
		must be above 32°F (0°C)

A2	Overheat protection fault	Check connections to the overheat protection.*
		Check sensor continuity.*
		Check heat exchanger sealings and walls.*

Table 5

* By installer or service technician only.

6 720 607 440

250 SXO LP, 250 SXO NG specifications

Bosch Appliances has long been a trusted name in home appliances, and its 250 SXO NG and 250 SXO LP models are no exceptions. Designed with both innovation and user convenience in mind, these cooking appliances cater to a variety of culinary needs while ensuring high efficiency and performance.

The Bosch 250 SXO NG and 250 SXO LP are built to provide optimal cooking experiences. One of their main features is the powerful BTU output, which allows for efficient and even cooking across all burner configurations. This enables users to achieve restaurant-quality results right in their kitchen.

These models are equipped with precision flame control, which means that users can easily adjust the heat for delicate dishes or higher temperatures for rapid boiling. Such flexibility is essential for those who enjoy experimenting in the kitchen. Additionally, the 250 SXO LP and NG models come equipped with sealed burners that effectively contain spills and make cleaning a breeze.

Another highlight of these Bosch appliances is their consistent ignition system, designed to deliver reliable starts every time. This feature eliminates the frustration often associated with lighting gas-powered cooktops. The integrated safety measures further enhance peace of mind; with flame supervision devices to shut off the gas supply if the flame goes out, these appliances provide an added layer of security for users.

The Bosch 250 SXO models shine in design as well. Crafted with sleek stainless steel, they are not only reliable but also add a touch of modern elegance to any kitchen. The intuitive controls are user-friendly, allowing cooks of all skill levels to operate the appliance with ease.

Moreover, both models offer compatibility with a variety of cookware, making them suitable for everything from small saucepans to large stockpots. Energy efficiency is also a primary consideration, as these appliances are designed to minimize energy consumption without compromising on performance.

In summary, the Bosch Appliances 250 SXO NG and 250 SXO LP are exemplary cooking appliances that combine powerful performance with sophisticated design. With their advanced technologies and user-centric features, they stand out as reliable options for anyone looking to elevate their culinary adventures.

Troubleshooting

Display

Cause

Solution

Check gas pressure. (see chapter 2.9) *

Check that gas is not diluted with air, as a

result from recent gas pipeline rework.*.

when the appliance starts up for some sec-

onds and then looses ionization signal).*

Check ionization electrode.*

Check for a proper ground.*

Check CO2 levels.* (see chapter 9)

250 SXO LP, 250 SXO NG specifications